NOS 1959 Raytheon BlackPlate OGetter 12AU7 ECC82 ~ Holy Grail Vintage Audio Tube ~ Holographic Transparent Sound Reproduction Exquisite Detail Warm Lush Sweet Images

legendary black plate ogetter 12au7, revered by audiophiles for their exquisite detail, micro dynamics and transparency

the smooth sweet sound stage exhibits phenomenal tonal complexity, punchy highs w/ no edge, and warm plate imaging

raytheon sonics are highly regarded (and were considered the quietest years before telefunkens late '50s market emergence!)

the phenomenal black plate carbide coating radiates heat better, reduces plate temps faster, and enhances tonal characteristics

the rich euphoric ogetter metallurgy reproduces sound w/ incredible realism, like a live-concert in depth and reflection

the colorful harmonics, expansive stage holographics, and dimensional bloom all contribue to the collectibility and lore

known for impressive quality control and strict testing processes, this nice silkscreen 1959 also includes a raytheon box

full gm conductance test pristine: 122/120 % gm (65% good) + important life test pass (a key longetivity indicator)

our special gm output test applies real world 225vdc voltages w/ filtered dc, plus an impeccable gas test / leak / short check

we also pride ourselves on a proprietary complimentary value-added refurb screening deox process, one of a kind qc

give several sessions or up to 100+ hours w/ your specific amps voltage to settle in (break-in is important)

ships well packed worldwide w/ raytheon boxes